Axis 213 PTZ User Manual

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Axis 213 PTZ User Manual Manual pdf 17 page image

17AXIS 213 PTZAdvanced - MPEG-4Client CompatibilityThe AXIS 213 PTZ supports the following different MPEG-4 profiles and levels:To use Advanced Simple Profile @ Level 3, select ISMA compliant and click the Save button.Level 5 is preferred if there is enough bandwidth available, as the image quality of the video stream is betterthan at level 3. The viewing client must support the profile used for the video stream, otherwise the MPEG-4stream cannot be viewed.Note: The Axis Media Control supports all the configuration possibilities described on this page.GOV SettingsThe GOV structure can be set to either I or IP, which describes the type of images included in the videostream, as well as their internal order. The IP-structure generally sends the differences compared to theprevious image and far fewer complete images, so this method uses much less bandwidth than theI-structure. The I-structure gives higher frame rates when using a high resolution, but requires morebandwidth.The GOV length determines the sum total of P-images and I-images in a GOV. Setting the GOV length to ahigh value saves considerably on bandwidth. However there may be noticeable decay in the image at highvalues.Notes:• GOV = Group of VOPs• VOP = Video Object Plane• Video Object Plane = imageProfile@Level PropertiesAdvanced Simple Profile @ Level 3 Max bit rate = 768 kbit/s, ISMA compliantAdvanced Simple Profile @ Level 5 Max Bit rate = 8 Mbit/s